Submission #830846

#	Time	Username	Problem	Language	Result	Execution time	Memory
830846		howard0027	Knapsack (NOI18_knapsack)	C++14	73 / 100	1080 ms	16264 KiB

knapsack

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;

vector<ll> V;
vector<ll> W;
ll T,n,dp[65000];
int main(){
	ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	cin>>T>>n;
	
	
	for(int i=1;i<=n;++i){
		ll v,w,s;
		cin>>v>>w>>s;
		
		for(int j=1;j<=s;j*=2){
			V.push_back(j*v);
			W.push_back(j*w);
			s-=j;
		}
		if(s){
			V.push_back(s*v);
			W.push_back(s*w);
		}
	}
	for(int i=0;i<V.size();i++){
		for(int j=T;j-W[i]>=0;j--){
			dp[j]=max(dp[j],dp[j-W[i]]+V[i]);
		}
	}
	cout<<dp[T];
}

Compilation message (stderr)

knapsack.cpp: In function 'int main()':
knapsack.cpp:27:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |  for(int i=0;i<V.size();i++){
      |              ~^~~~~~~~~

• Subtask 1: 12 / 12
• Subtask 2: 17 / 17
• Subtask 3: 20 / 20
• Subtask 4: 24 / 24
• Subtask 5: 0 / 27